Analysis of Adverse Drainage Problems of Drainage Asphalt Bridge Deck Pavement&Optimization Countermeasures
Drainage asphalt pavement has been widely used in the construction of high-grade roads due to its outstanding environmental benefits.It summarizes&analyzes the actual adverse drainage problems of drainage asphalt in the application of elevated bridge deck pavement.Under the complex horizontal&vertical conditions of super-high transition section,it is proposed to control the length and composite slope of transition section in terms of technical parameters,and adopt the elevation contour optimization design method in terms of method.In the section of super wide bridge deck,the optimization countermeasures of appropriately increasing cross slope and adding internal cavity drainage channel are put forward;in the large longitudinal slope section,it is recommended to give priority to the use of ordinary asphalt and propose the detailed drainage structure at the pavement junction.Aiming at the water blocking problem of bridge expansion joints,the optimization scheme of setting anti stamping trapezoidal drainage horizontal pipes at the junction is proposed.
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